LT1011/LT1011A Voltage Comparator Fea T Descrip T n Pin Compatible with LM111 Series Devices The LT 1011 is a general purpose comparator with sig- n Guaranteed Max 0.5mV Input Offset Voltage nificantly better input characteristics than the LM111. n Guaranteed Max 25nA Input Bias Current Although pin compatible with the LM111, it offers four n Guaranteed Max 3nA Input Offset Current times lower bias current, six times lower offset voltage n Guaranteed Max 250ns Response Time and five times higher voltage gain. Offset voltage drift, n Guaranteed Min 200,000 Voltage Gain a previously unspecified parameter, is guaranteed at n 50mA Output Current Source or Sink 15V/C. Additionally, the supply current is lower by n 30V Differential Input Voltage a factor of two with no loss in speed. The LT1011 is n Fully Specified for Single 5V Operation several times faster than the LM111 when subjected to n Available in 8-Lead PDIP and SO Packages large overdrive conditions. It is also fully specified for DC parameters and response time when operating on a single 5V supply. The LT1011 retains all the versatile features of a T the LM111, including single 3V to 18V supply operation, n SAR A/D Converters and a floating transistor output with 50mA source/sink n Voltage-to-Frequency Converters capability. It can drive loads referenced to ground, nega- n Precision RC Oscillator tive supply or positive supply, and is specified up to 50V n Peak Detector between V and the collector output. A differential input n Motor Speed Control voltage up to the full supply voltage is allowed, even with n Pulse Generator 18V supplies, enabling the inputs to be clamped to the n Relay/Lamp Driver supplies with simple diode clamps. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical a T 10s 12-Bit A/D Converter 3.9k Response Time vs Overdrive R1 15V 1k LM329 500 FULL-SCALE 7V *R2 AND R4 450 TRIM SHOULD TC TRACK 15V R2* R3 400 0.001F 6.49k 6.98k 15V 350 INPUT 300 0V TO 10V 5V FALLING 250 OUTPUT 6012 R4* R5 12-BIT 2.49k 1k 200 D/A CONVERTER RISING + 150 OUTPUT R6 LT1011A 100 820 50 PARALLEL PARALLEL 0 OUTPUTS OUTPUTS 0.1 1 10 100 SERIAL OUTPUT OVERDRIVE (mV) 1011 TA02 7475 D AM2504 LATCH 5V SAR REGISTER CC E S CP S START CLOCK f = 1.4MHz 1011 TA01 1011afe 1 For more information www.linear.com/LT1011 RESPONSE TIME (ns) ion pplica ions pplica ion uresLT1011/LT1011A a T e Maxi Mu M r a T (Note 1) Supply Voltage (Pin 8 to Pin 4) .................................36V Input Voltage (Note 2) ..........................Equal to Supplies Output to Negative Supply (Pin 7 to Pin 4) Output Short-Circuit Duration ...............................10 sec LT1011AC, LT1011C ...............................................40V Operating Temperature Range (Note 3) LT1011AI, LT1011I .................................................40V LT1011AC, LT1011C .................................. 0C to 70C LT1011AM, LT1011M (OBSOLETE)........................50V LT1011AI, LT1011I ................................40C to 85C Ground to Negative Supply (Pin 1 to Pin 4) ..............30V LT1011AM, LT1011M (OBSOLETE)..... 55C to 125C Differential Input Voltage ........................................36V Storage Temperature Range .................. 65C to 150C Voltage at STROBE Pin (Pin 6 to Pin 8) .......................5V Lead Temperature (Soldering, 10 sec) ...................300C p c F T TOP VIEW + V TOP VIEW 8 + GND 1 7 OUTPUT GND 1 8 V + BALANCE/ INPUT 2 7 OUTPUT + + INPUT 2 + 6 STROBE BALANCE/ INPUT 3 6 STROBE 5 BALANCE INPUT 3 V 4 5 BALANCE 4 V N8 PACKAGE S8 PACKAGE H PACKAGE 8-LEAD PDIP 8-LEAD PLASTIC SO 8-LEAD TO-5 METAL CAN T = 150C, = 130C/W(N8) JMAX JA T = 150C, = 150C/W(S8) JMAX JA T = 150C, = 150C/W, = 45C/W JMAX JA JC OBSOLETE PACKAGE Consider the N8 or S8 Packages for Alternate Source 1011afe 2 For more information www.linear.com/LT1011 ion igura on in ings bsolu